Why Did My Roof Coating Fail?

Figuring out the mechanism of failure on a failed roof coating is a crucial step in addressing and fixing the issue. Understanding the cause of the failure can help prevent future failures and improve the overall performance of the roof coating. Here are several steps to help determine the mechanism of failure on a roof coating.

Inspect the Roof Surface: A visual inspection of the roof surface is the first step in identifying the mechanism of failure. Look for signs of physical damage, such as cracks, blisters, and tears in the coating. Pay attention to the surrounding area, including roof penetrations and flashings, to see if there are any signs of leakage or water damage.

Review the Product Specification: The product specification provides important information about the product and its intended use. Review the specification to ensure that the product was applied correctly and was suitable for the type of roof and the climate conditions.

Consider the Age of the Roof Coating: The age of the roof coating is another important factor to consider when figuring out the mechanism of failure. As roof coatings age, they can lose their elasticity and become brittle, leading to cracking and failure.

Environmental Factors: Environmental factors, such as extreme temperature changes, strong winds, and heavy rain, can cause roof coatings to fail. Review the weather conditions at the time of the failure to determine if there were any extreme weather events that could have contributed to the failure.

Substrate Deterioration: The underlying substrate, such as the roof deck or insulation, can also play a role in the failure of a roof coating. If the substrate is damaged, the roof coating may not adhere properly or may become separated from the substrate, leading to failure.

Improper Application: Improper application, such as incorrect mixing or inadequate surface preparation, can also contribute to the failure of a roof coating. It is important to ensure that the contractor followed the manufacturer's instructions and applied the product correctly.

Once the mechanism of failure has been identified, the next step is to address the issue and make the necessary repairs. In some cases, this may involve removing the failed coating and reapplying a new one, while in others, simple repairs may be sufficient.

In conclusion, figuring out the mechanism of failure on a failed roof coating is an important step in addressing and fixing the issue. By following these steps and considering the various factors that can contribute to failure, building owners can ensure that their roof coatings perform optimally and protect their buildings for years to come.